Coupler shank and yoke connection



May 15,1928. E Q R 16,959

'COUPLBR SHANK AND YOKE CONNECTION Original Filed July 15, 1926. g 5 5 1 r 7 0 l0 27 x 11 N 1 N y IN V EN TOR.

May 15. 1928. v 4 R 16,959

- COUPLER SHANK AND YOKE CONNECTION Original Filefi July 15, 1926 2 Sheets-Sheet 2 I Q I 28- 3 yllll/lll INVENTOR.

than the key,

(flll'YeCl filCflS for engaging siinilai' of the draw but slot, but almostinvariablythe ment on the market vid'e for the il any one of them Reissuecl May 15, 1928.

vireo AT ES FATE NT o ERNEST G. 'ooonw m, or PELHAM, i mw yoziui,

COMPANY, or NEW YORK, N. Y., A CORPORATIOROE NEuv nnsEy.

nssisnon To STANDARD ooUPLER COUPLER SHANK AND Y6K CONNECTION.

original m5. 1,608,386, dated November 23, 1926, ser r eissue filed December 17,

the yoke so as tofileng'then the life of the parts by eliminating undue Wear in some lo calized portion during an ling and has for ts principal object the pro'vision of a more simp'le and elficient i'oin of coupler shank 'ivhi ch shall accommodate an equalizer and yet he thoroughly intei'ehengeahle with the standard equipment and heinenpensi've.

Then the slot in the standard coupler shzinl; was only an eighth ofon inch longer vthe stinin Waselways entirely on one side of the yoke dui'ing angling movement and this led TOGXPBIlHlGHtS to permitlateral i noveinent oil the drew, her Without disturbing the normal relation of the key to the yoke links whereby the s transmitted to the draft gear might jalized. vIt Was suggested that-shims or bushings might be placed on both sides lengthening and widening the key slot thru; the coupler shank'lor this purpose, the shims or bushings having center oit'cuiva'ture of "both surfaces was in the center ot' the kev.

0111s of the devices nig 'hthnve been ssh nctoi y if there were but one type of equiphut unfoftunately there are several styles of draft rigging parts and itis ahsolutely essential at the present day that a eouplenslnmkto he sutisfactony she'll be interchangeable; that is, it n iusl; accommodate thevertieal yoke attaehn'lentand pro- Syinington standard follower. in other Words, it must absolutely interchange with standard D couplers all over the country for otherwise the railroads would have to stool: two kinds of couplers: utteinptedjto use a noninterehangeahle device. It is "particularly folthis reason "that the swivelbutt eou pl is have not met with success in spite of the feet that they equalize the load on angle.

in the drawings P t Figure 1. is a ho rizontel section tln'u co pler shank and yoke connection ni'vol fing the present invention.

igure 2 is central, vertical section. igure 3 a top plan View ofthe rear end ofthe coupler shank key 14 17 i I 7 I v Til) to prevent bulging 'outnerd or L p lis led with the melting; a. highly efficient m1 no. 122;'6191 ,;fi1ed Jilly 1927." "Serial No. 240,888.

and'6 are transverse 've itie ul on 'hnes 4-4, 5 5 and 6-6 j li igures 4, 5 sections taken of 'Fig'nre 3. t In the specification and thruout the claims 'the word" length will he nsedlo denote distance in a forward and rearward direction as regards the railway "can", Width from side to side, and depth OiWhe ght a meas urement from top to-bottom.

lh'e yoke numbered 10 and hes the usual oppositely disposedflzu'lng front Walls 11 which have slots 12 therein to receive the k 'h'l'tl ,Lho coupler. snan e 1s geno ec Whole by the nuineral 15; has flat top and bottom Wells 16 and sloping side walls the fo -iner strengthened by a verticalle'psinginwardof this position of the hollow st in in either bufl or pull, this being ace-oinside Walls of the coupler as Well the'l'nner rib and at the same time to east.

1m; rem-end of the coupler sln'ml'; is of solid metal except for the opening: 20 to re ceive the .usual iollower'lug, Which opening ininiinuinvalue Y find it "highly advantageous to omit the usual eQres and to have these walls 28 and 29 solidewith extef or ribs 30 formed grooving the top and hottoin faces as at '31. The ik'ey iequz lizer 25 is preferablyquite a hit Wider than the width of the real; end-of the eoupl'ei j shank. The top and bottom flan es 26s'1ieintegra 1 with the i'eai'flof theequ'at lZell" and-are preferiihly somewhat concave at their fl OH f- IJOIf ions as at '33 Qt'o 1 facilitate insertion in the Coupler.

It will he netted the lre'a-i end o'flthe equalizer. is ample to permit the PIO V'ISi OII Of an Opening t0 'tlitft'the body o'f lnetal at :15, 1926. museum slightly concave verti! quantity of "metal above and below the key-We slot must have a definite very simple The area of the bearing between the equalizer and the coupler is somewhat greater than between the usual coupler ,and key and the equalizer has more than ample stiffness by virtue of its greatly increased depth and the provision of the top and bottom flanges,

WVith the longer'key slot, the presentstandard is 6 inches, small angles give an even bearing on both sides of the yoke but the key bears on one knife edge of the coupler which naturally will soon round up, wearing awaythe bearing to such an extent that on a straight pull the load will of the key only, and this in turn will bend the key after. which there will be a further rounding away of the corners of the slot, a consequent further bending of the key, and so on.

What I claim is 1-- 1. A coupler shank key-way slot of approximately twice the height of the standard 6 by 1 key and more than one tenth longer than said standard key, the rear Wall of the slot having an arcuate recess therein to receive a key equalizer. the radius of the are being less than the distance from the center of the key to the surface arcuate. i

2. The device of claim 1 in which the curve of the recess is an arc struck from the.

intersection of the center line of the gear and a vertical plane touching the rear of the key in'its normal position. 1

3. A coupler shank having a key slot approximately twice as high-and more-than one tenth longer than a standard key, the rear wall of theslot being horizonally concave to receive a key equalizer, the walls flabove and below the slot being solid and tion of ribbed externally and the rear end of the shank being solid except for tlierecess and a lug receiving opening communicating with said recess.

4. The device of claim 1 in which the porthe shank in advance of the slot is tapered and hollow except for a central internal vertical rib to prevent bulging outwardor collapsing inward of the hollow tapered portion of the stem.

5. In combination. a coupler key, an equal vizer having forwardly extending flanges to receive a portion of the key snu'gly bet-ween them, an arcuate extension'projecting rearwardly from the equalizer, a coupler shank having a transverse slot of such; height as face length lessthan the over-all length of the assembled key and equalizer, the rear wall of said coupler slot having an arcuate recess therein tcfreceive the equalizer extem be in the center,

having a transverse the equalizer andgof side sion, the axis of the surface of the arcuate recess lying in a transverse vertical plane rearward of the center of the coupler slot.

6. In. combination, a coupler having an ing therein also to receive said follower 'lug, the rear wall of the coupler slot being on an arc struck from' the rear edge of the key and said equalizer having top and bottom flanges extending'above and below the key.

In combination, a slotted yoke, a slotwidth of the coupler, a key, an equalizer surrounding the central portion of the key at rear, top and bottom, fitting the slot in the coupler, and having 'rotative engagement with said recess, said coupler and ted coupler having a concave recess at the 'rear of the slot of less diameter than the equalizer having communicatingopenings therein to receive a follower lug. l

8. An equalizer consisting of a body, a convex extension projecting from the rear thereof and having its verticalaxis in 'a central longitudinal plane and near the front surface of the body, a pair of flanges ex from the body a'pproxi tending forwardly mately the length of a standard coupler key and spaced apart to receive such coupler key between them. a

9. The device of claim 8 in which the front faces of the flanges areconcave whereby the equalizer may be inserted in a coupler slot of less side face length thanthe over-all length of the equalizer.

10. A coupler shank form heightf having an opening therethrough, the wall on one side of the opening being solid and having an outside cavity.

11. Acoupler shank of substantially uniform height having a key-way slot, the wall of the shank on each side of the slot being solid andhaving an external recess spaced away from each side edge and from .the butt edge. v 12. A couplershauk of substantially uniform height having a transverse key-way slot, the walls of the shank on each side of the slot-being solid and each having a plurality of external recesses opening to one face only.

. 13. A coupler shank having a draft-keyopening therethrough located between substantially parallel walls ateach side of the opening. said shank being of solidsection surrounding. saidfopening and having outside cored cavitles formed in said parallel walls, v.

ER E T G. Q WIN.

of substantially uni- 

